Analysis

  • max time kernel
    150s
  • max time network
    113s
  • platform
    windows10_x64
  • resource
    win10v200722
  • submitted
    06/08/2020, 08:59

General

  • Target
    d0858806d0513458a184bcc9d7423a8b.exe
  • Size 1.0MB
  • Sample200806-c1gyk5p2la
  • SHA256 9cd147c990ea2f746dcce45d226674cf61ffa485df48004bd7049ab8719abe45
  • MD5 SHA1 SHA512

Malware Config

Extracted

Path
  • C:\Users\Admin\AppData\Local\94A4C56A47\Log.txt

  • masslogger

Ransom Note
  • <|| v2.1.0.0 ||> User Name: Admin IP: 154.61.71.13 Location: United States Windows OS: Microsoft Windows 10 Pro 64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Persocon Processor 2.5+ GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 8/6/2020 10:59:23 AM MassLogger Started: 8/6/2020 10:59:18 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Roaming\appdata\hsdjlfkwfj.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| USB Spread ||> Disabled <|| Downloader ||> Disabled <|| Window Searcher ||> Disabled <|| Bot Killer ||> Disabled <|| Search And Upload ||> Disabled <|| Telegram Desktop ||> Not Installed <|| Pidgin ||> Not Installed <|| FileZilla ||> Not Installed <|| Discord Tokken ||> Not Installed <|| NordVPN ||> Not Installed <|| Outlook ||> Not Installed <|| FoxMail ||> Not Installed <|| Thunderbird ||> Not Installed <|| FireFox ||> Not Found <|| QQ Browser ||> Not Installed <|| Chromium Recovery ||> Not Installed or Not Found <|| Keylogger And Clipboard ||> NA

Signatures

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Executes dropped EXE 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • NTFS ADS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2612 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Drops startup file 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

Processes

  • C:\Users\Admin\AppData\Local\Temp\d0858806d0513458a184bcc9d7423a8b.exe
    "C:\Users\Admin\AppData\Local\Temp\d0858806d0513458a184bcc9d7423a8b.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3696
    • C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\system32\notepad.exe"
      2⤵
      • NTFS ADS
      • Suspicious use of WriteProcessMemory
      • Drops startup file
      PID:4048
      • C:\Users\Admin\AppData\Roaming\appdata\hsdjlfkwfj.exe
        "C:\Users\Admin\AppData\Roaming\appdata\hsdjlfkwfj.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetThreadContext
        PID:4008
        • C:\Users\Admin\AppData\Roaming\appdata\hsdjlfkwfj.exe
          "C:\Users\Admin\AppData\Roaming\appdata\hsdjlfkwfj.exe"
          4⤵
          • Suspicious behavior: AddClipboardFormatListener
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:516
        • C:\Users\Admin\AppData\Roaming\appdata\hsdjlfkwfj.exe
          "C:\Users\Admin\AppData\Roaming\appdata\hsdjlfkwfj.exe" 2 516 88968
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          PID:636

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/516-16-0x0000000004980000-0x0000000004981000-memory.dmp

        memory/516-4-0x0000000000400000-0x0000000000541000-memory.dmp

        memory/516-23-0x0000000006480000-0x000000000648F000-memory.dmp

        memory/516-8-0x0000000000400000-0x0000000000541000-memory.dmp

        memory/516-9-0x0000000000400000-0x0000000000541000-memory.dmp

        memory/516-22-0x0000000007390000-0x0000000007391000-memory.dmp

        memory/516-11-0x0000000002340000-0x00000000023DA000-memory.dmp

        memory/516-13-0x0000000072D80000-0x000000007346E000-memory.dmp

        memory/516-21-0x0000000006500000-0x0000000006501000-memory.dmp

        memory/516-17-0x00000000028B0000-0x00000000028B1000-memory.dmp

        memory/516-18-0x0000000004EA0000-0x0000000004EDE000-memory.dmp

        memory/516-19-0x0000000004EE0000-0x0000000004EE1000-memory.dmp

        memory/516-20-0x00000000052B0000-0x00000000052B1000-memory.dmp